Bicycle belt adjusting device

Abstract

The utility model discloses a bicycle belt adjusting device which comprises a bicycle frame, a rear wheel adjusting seat and a rear wheel shaft. An adjusting hole is formed in a rear fork of the bicycle frame, and the rear wheel adjusting seat is rotationally arranged on the adjusting hole; the rear wheel adjusting seat is provided with an eccentric fixing hole, and the rear wheel shaft is fixed on the eccentric fixing hole of the rear wheel adjusting seat; the rear wheel shaft is driven to move synchronously by rotating the rear wheel adjusting seat on one side, and then the belt tensioning adjusting effect is achieved. The rear wheel shaft is eccentrically fixed on the rear wheel adjusting seat, and the rear wheel adjusting seat is rotated to adjust the center distance between the front belt pulley and the rear belt pulley so as to tension the belt; the tensioning adjustment of the belt is completed by tightening the locking screw and clamping the rear wheel adjusting seat; due to the fact that the flat positions are arranged at the two ends of the rear axle, when the rear wheel adjusting seat on one side of the frame is rotated, the other side rotates synchronously, and adjustment is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of adjusting devices, specifically to a bicycle belt adjusting device. BACKGROUND

[0002] The existing electric power-assisted bicycle belt adjustment is all using tension pulley device or using belt adjustment positioning device to realize.Adjusting using tension pulley device, bicycle front pulley and rear pulley center distance cannot change, and tension adjustment cannot be constant in the process of bicycle movement, and it is easy to cause belt to jump tooth or fall off.Using belt adjustment positioning device needs to open two deep grooves on rear frame, affects frame strength, and cannot guarantee that the adjustment distance of both sides is same, and it is easy to cause rear wheel to incline or rear wheel shaft to exist stress to reduce service life. SUMMARY

[0003] The utility model provides a bicycle belt adjusting device to solve the problems in the background art.

[0004] The utility model discloses a bicycle belt adjusting device is realized through the following technical schemes, including: bicycle frame, rear wheel adjusting seat and rear wheel shaft;

[0005] The rear fork of the bicycle frame is provided with an adjusting hole, and the rear wheel adjusting seat is rotationally arranged on the adjusting hole;The rear wheel adjusting seat is provided with an eccentric fixing hole, and the rear wheel shaft is fixed to the eccentric fixing hole of the rear wheel adjusting seat;By rotating the rear wheel adjusting seat on one side, the rear wheel shaft is driven to move synchronously, thereby realizing the effect of belt tensioning adjustment.

[0006] As a preferred technical scheme, the eccentric fixing hole is flat, and the two ends of the rear wheel shaft are also provided with flat positions corresponding to the eccentric fixing hole, and by rotating the rear wheel adjusting seat on one side, the rear wheel shaft is driven to move under the action of the eccentric fixing hole and the rear wheel shaft.

[0007] As a preferred technical scheme, the rear fork of the bicycle frame is provided with a compression groove, and one end of the compression groove is provided with a locking screw;The locking screw is arranged through the compression groove, and when the rear wheel shaft is installed, the flat position of the rear wheel adjusting seat is aligned with the compression groove, and the rear wheel shaft is installed from bottom to top to the eccentric fixing hole and then locked with a fixed nut.

[0008] As a preferred technical scheme, the two ends of the rear wheel shaft are provided with fixed nuts, and the threaded end of the rear wheel shaft passes through the rear wheel adjusting seat and is connected with the fixed nut.

[0009] As a preferred technical scheme, the compression groove is provided with a blocking block, and the locking screw is arranged through the blocking block.

[0010] As a preferred technical scheme, the rear wheel adjusting seat is provided with a rotating hole for rotation.

[0011] The utility model discloses the beneficial effect is:

[0012] The utility model discloses a rear wheel axle eccentricity is fixed on the rear wheel adjusting seat, and the rear wheel adjusting seat is rotated to adjust the center distance of front and rear pulleys to realize the tensioning of the belt, and the belt tensioning adjustment is completed by clamping the rear wheel adjusting seat through the tightening of locking screw, and because the rear wheel axle is provided with the flat position at both ends, when the rear wheel adjusting seat of one side of the frame is rotated, the other side will rotate synchronously, and the adjustment is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the explosion structure schematic diagram of the utility model;

[0016] Figure 3 It is the local structure schematic diagram of the utility model;

[0017] Figure 4 It is the rear wheel adjusting seat structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] All features disclosed in this specification, or all steps of the methods or processes disclosed, can be combined in any manner, except where features or steps are mutually exclusive.

[0019] As Figures 1-4 Indicated, a bicycle belt adjusting device of the utility model, include: bicycle frame 1, rear wheel adjusting seat 2 and rear wheel axle 3;

[0020] The rear fork of the bicycle frame 1 is provided with an adjusting hole 4, and the rear wheel adjusting seat 2 is rotatably arranged on the adjusting hole 4;The rear wheel adjusting seat 2 is provided with an eccentric fixing hole 5, and the rear wheel axle 3 is fixed on the eccentric fixing hole 5 of the rear wheel adjusting seat 2;By rotating one side of the rear wheel adjusting seat 2, the rear wheel axle 3 is driven to move synchronously, thereby realizing the effect of belt tensioning adjustment.

[0021] The eccentric fixing hole 5 is flatly arranged, and the two ends of the rear wheel shaft 3 are also provided with flat positions corresponding to the eccentric fixing hole 5.

[0022] In order to conveniently fix the rear wheel adjusting seat, the rear fork of the bicycle frame 1 is provided with a pressing groove 8 in the embodiment, and one end of the pressing groove 8 is provided with a locking screw 9.

[0023] In order to conveniently install the rear wheel shaft, the two ends of the rear wheel shaft 3 are both provided with fixing nuts 10 in the embodiment, and the threaded end of the rear wheel shaft 3 is connected with the fixing nuts 10 through the rear wheel adjusting seat 2.

[0024] In order to achieve an aesthetic effect, the pressing groove 8 is provided with a shielding block 11 in the embodiment, and the locking screw 9 is arranged through the shielding block 11.

[0025] In order to conveniently rotate and adjust, the rear wheel adjusting seat 2 is provided with a rotating hole position 12 for rotation in the embodiment.

[0026] The rear wheel shaft is eccentrically fixed on the rear wheel adjusting seat, the rear wheel adjusting seat is rotated to adjust the center distance of the front and rear pulleys to realize the belt tensioning, the belt tensioning adjustment is completed by clamping the rear wheel adjusting seat through the tightening of the locking screw, and since the two ends of the rear wheel shaft are provided with flat positions, when the rear wheel adjusting seat on one side of the frame is rotated, the other side is synchronously rotated, and the adjustment is convenient.

[0027] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any change or replacement without creative labor is covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.

Claims

1. A bicycle belt adjustment device, characterized by, Include: Bicycle frame (1), rear wheel adjusting seat (2) and rear wheel shaft (3); The rear fork of the bicycle frame (1) is provided with an adjusting hole (4), and the rear wheel adjusting seat (2) is rotatably arranged on the adjusting hole (4); The rear wheel adjusting seat (2) is provided with an eccentric fixing hole (5), and the rear wheel shaft (3) is fixed on the eccentric fixing hole (5) of the rear wheel adjusting seat (2); By rotating one side of the rear wheel adjusting seat (2), the rear wheel shaft (3) is driven to move synchronously, thereby realizing the effect of belt tensioning adjustment.

2. The bicycle belt adjustment device of claim 1, wherein: The eccentric fixing hole (5) is flat, and the two ends of the rear wheel shaft (3) are also provided with a flat position corresponding to the eccentric fixing hole (5). By rotating one side of the rear wheel adjusting seat (2), the rear wheel shaft (3) is driven to move under the action of the eccentric fixing hole (5) and the rear wheel shaft (3).

3. The bicycle belt adjustment device of claim 1, wherein: The rear fork of the bicycle frame (1) is provided with a pressing groove (8), one end of the pressing groove (8) is provided with a locking screw (9); The locking screw (9) is arranged through the pressing groove (8), when installing the rear wheel shaft (3), the flat position of the rear wheel adjusting seat (2) is aligned with the pressing groove (8), and the rear wheel shaft (3) is installed from bottom to top to the eccentric fixing hole (5) and then locked with the fixed nut (10).

4. The bicycle belt adjustment device of claim 1, wherein: The two ends of the rear wheel shaft (3) are provided with fixed nuts (10), and the threaded end of the rear wheel shaft (3) passes through the rear wheel adjusting seat (2) and is connected with the fixed nut (10).

5. The bicycle belt adjustment device of claim 3, wherein: The pressing groove (8) is provided with a blocking block (11), and the locking screw (9) passes through the blocking block (11).

6. The bicycle belt adjustment device of claim 1, wherein: The rear wheel adjusting seat (2) is provided with a rotating hole (12) for rotation.

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